131148305 has 4 divisors (see below), whose sum is σ = 157377972. Its totient is φ = 104918640.

The previous prime is 131148293. The next prime is 131148331. The reversal of 131148305 is 503841131.

It is a Cunningham number, because it is equal to 11452²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503841131 = 127 ⋅3967253.

It can be written as a sum of positive squares in 2 ways, for example, as 47224384 + 83923921 = 6872^2 + 9161^2 .

It is not a de Polignac number, because 131148305 - 2¹⁴ = 131131921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13114826 + ... + 13114835.

It is an arithmetic number, because the mean of its divisors is an integer number (39344493).

Almost surely, 2^131148305 is an apocalyptic number.

It is an amenable number.

131148305 is a deficient number, since it is larger than the sum of its proper divisors (26229667).

131148305 is an equidigital number, since it uses as much as digits as its factorization.

131148305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26229666.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 131148305 is about 11452.0000436605. Note that the first 4 decimals coincide. The cubic root of 131148305 is about 508.0668906173.

Adding to 131148305 its reverse (503841131), we get a palindrome (634989436).

The spelling of 131148305 in words is "one hundred thirty-one million, one hundred forty-eight thousand, three hundred five".